<!DOCTYPE html>
<html lang='en'>

<head>
   <meta charset='UTF-8'>
   <meta http-equiv='X-UA-Compatible' content='IE=edge'>
   <meta name='viewport' content='width=device-width, initial-scale=1.0'>
   <title>Document</title>
   <script src='../vue.js'></script>
</head>

<body>
   <div id='app'>
      <h1>{{count}}</h1>
      <!-- prevent修饰符可以阻止默认事件,常见于form表单的submit事件 -->
      <button @contextmenu.prevent>右键</button>
      <br>
      <!-- .stop修饰符 阻止传播 -->
      <div @click="fn1">
         outer1
         <div @click.stop="fn2">inner1</div></div>
      <br>
      <!-- .capture修饰符 把事件传播方式改为捕获 -->
      <div @click.captrure='fn1'>
         outer2
         <div @click="fn2">inner2</div></div>
         <br>
      <!-- .self修饰符:当事件要被触发的时候e.target是否是自身,如果是在触发事件 -->
      <div @click.self="fn1">
         outer3
      <div @click="fn2">inner3</div></div>
      <br>
      <!-- .once修饰符:一次性事件 -->
      <button @click.once="fn1">触发fn1</button>
      <br>
      
      <input type="text" @keyup.13="fn1"><br>
      <input type="text" @keyup.enter="fn2">
      <input type="text" @keyup.space="fn1">
      <input type="text" @keydown.esc="fn2">
      <input type="text" @keydown.tab="fn1">
   </div>

      <script>
         Vue.config.productionTip = false;

         const vm = new Vue({
         el: '#app',
            data() {
               return {
                  count: 0
               }
            },
            methods: {
               fn1() {
                  console.log('fn1');
               },
               fn2() {
                  console.log('fn2');
               } 
            }
         })
      </script>
</body>

</html>